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4. For complete shut down and before servicing, turn gas control knob
(
7-B) to OFF position. When water heater is not in use set
FIG
temperature control lever (White Rogers
lowest possible position.
SCALDING INJURY
Setting temperature control dial at a higher position will produce
•
excessively hot water.
The temperature knob or lever is factory adjusted to its lowest dial
setting. We recommended the mid-point position between warm and
hot, as noted above. This will provide for energy efficient operation
and sufficient hot water. Valves for reducing point of use temperature
by mixing cold and hot water are available. Consult a licensed plumber
or local plumbing authority.
5. To Adjust Main Burner (
FIG
1. Loosen air shutter screw (4-A).
2. Slide air shutter (4-B) to right until some yellow appears in main
burner flame.
3. Move air shutter (4-B) to left until yellow disappears.
4. Retighten air shutter screw (4-A).
Read MAINTENANCE AND CARE INSTRUCTIONS
ELECTRONIC IGNITION OPERATION
1. Refer to WIRING DIAGRAM
FIG
2. If remote switch light stays on longer than 15 seconds, place
remote switch in OFF position and wait 5 minutes.
3. Repeat step one.
4. For complete shut-down and before servicing:
a. Place remote switch in OFF position.
b. Remove red wire from left hand terminal of ECO switch (ECO to
valve).
5. If heater fails to operate due to high water temperature, a lockout
condition occurs (indicator light on). After water cools, reset switch
in OFF position for at least 30 seconds, then turn to ON position.
6. If a lockout condition persists contact an Atwood Service Center.
Read
MAINTENANCE AND CARE INSTRUCTIONS
MAINTENANCE
PILOT RELIGHT OPERATION
1. Turn the switch located on the spark module to the ON position.
2. Read PILOT OPERATION instructions.
3. For complete shut down, turn lighting control knob on thermostat
and spark module switch to the OFF position.
Read
MAINTENANCE AND CARE INSTRUCTIONS
GAS/ELECTRIC COMBINATION FUNCTION
. When the gas switch is turned on, the unit will make three
GAS OPERATION
attempts to light. If for any reason there is no ignition, the unit will
lockout and the red lockout lamp will illuminate. If the thermostat fails,
the ECO will also lockout the unit, requiring resetting. Determine the
reason for no ignition, correct it, and reset the gas ignition sequence
by turning the switch off, then on.
. When the electric switch is turned on, the relay at the
ELECTRIC OPERATION
rear of the unit will close and pass 110vac to the element. If the
thermostat were to fail, the ECO will open and lockout the system. To
correct, check the thermostat to assure good contact with the tank
and reset the control by turning the electric switch off, then on.
/
. The unit can be run in both gas and electric
GAS
ELECTRIC OPERATION
modes simultaneously for quick recovery. note: if the gas fails to
ignite, the gas mode will lockout, but the lockout lamp will not
illuminate since the electric mode is still operational. Should you notice
slow recovery, indicating the gas is not working, turn the electric
switch off. The lamp will then illuminate indicating a lockout has
occurred on the gas side. Correct the problem and turn the switches
back on.
Read
MAINTENANCE AND CARE INSTRUCTIONS
®
) or dial (Robertshaw
WARNING
4):
12. Place remote switch in ON position.
& ELECTRONIC IGNITION
.
MAINTENANCE AND CARE INSTRUCTIONS
SERVICE CALLS & QUESTIONS
®
) to
Location and phone numbers of qualified Service Centers can be found
at our website http:/www.atwoodmobile.com or call 574-262-2655 to
have a Service Center List mailed.
Shut off gas supply at LP container before disconnecting a gas line.
•
Keep control compartment clean and free of gasoline, combustible
•
material, and flammable liquids and vapors.
AFTERMARKET WATER HEATING ELEMENT DEVICES
EXPLOSION / BURN INJURY
alter water heater, it will void warranty.
•
DO NOT
Aftermarket heating elements, they can lack critical safety
•
DO NOT USE
controls.
Use of Aftermarket heating elements can lead to an out of control
•
heating of water tank and a catastrophic wet side explosion.
The use of manufacturer's aftermarket heating element devices may
also result in damage to components or water heater. Atwood's written
warranty states - "failure or damage resulting from any alteration to
our water heater is the owner's responsibility". Any alteration, like the
addition of an aftermarket heating element device, will void the warranty.
GENERAL INFORMATION
• LP and Water system must be turned on.
• Have gas pressure tested periodically. Should be set at 11 inches of
water column with three appliances running.
• Drain water heater at regular intervals (at least one time during the
year).
• Drain water heater before storing RV for the winter or when the
possibility of freezing exists.
• Keep vent and combustion air grill clear of any obstructions.
• Periodically, compare flame of main and pilot burners with
main burner adjustments in
• When water heater is not in use set temperature control lever (White
Rogers) or dial (Robertshaw) to lowest possible position. This will
reduce the effects of low outdoor temperatures on calibration of
temperature control mechanism.
ELECTRONIC IGNITION MAINTENANCE
• The water heater comes factory-equipped with a fused circuit board,
which will protect the circuit board from wiring shorts. If the fuse
should activate, the water heater will not operate. Before replacing
the fuse, check for a short external to the board. Once the short is
corrected, replace the 2 amp fuse with a mini ATO style fuse. Do not
install a fuse larger than 3 amps.
• If the fuse is good and the unit is inoperative, check for excessively
high voltage to the unit (more than 14 volts).
• If the previous two steps did not solve the problem, check the
thermal cut-off (
power supply line. This device will shut off electrical power and stop
heater operation when activated. For example, if an obstruction
within the flue tube should occur, as described in the Preventative
Maintenance section, the burner flame/heat may contact the cutoff,
resulting in a melting of the fuse element incorporated in the
thermal cutoff. In order to restore power and proper operation of the
water heater, the obstruction must be removed and the thermal
cutoff must be replaced.
PREVENTATIVE MAINTENANCE
Spiders, mud wasps, and other insects can build nests in the burner
tube. This will cause poor combustion, delayed ignition or ignition
outside combustion tube. Listen for a change in burner sounds or in
flame appearance from a hard blue flame to a soft lazy flame or one
that is very yellow. These are indications of an obstruction in burner
tube (
4-C). Inspect and clean on a regular basis.
FIG
a. Remove air shutter screw (
down burner tube.
b. Run a flexible wire brush down burner tube (
visible at end of burner tube.
4
WARNING
FIRE OR EXPLOSION
WARNING
HOW TO OPERATE YOUR WATER HEATER
3-I). The thermal cutoff is a device installed in the
FIG
4-A) and slide air shutter (
FIG
5 and
FIG
.
4-B)
FIG
4-D) until it is
FIG
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